No FPD file, but you could use my design. All MOTM spacing on this one, except that I moved the switches and the ribbon socket in line with the knobs.
Click for bigger picture.
It's not totally finished, need the switches.

I'm at the calibration stage and it looks like I've got problems. Current mode adjustment and pressure comparator adjustment went fine; Gate led lights and goes out as it should but I've hit a wall with the Voltage mode range adjustment.... VR2 adjusts R117 to -4.75V no prob, VR3 adjusts R28 to 0.6V no prob.. TP1 however reads nothing where ever I press on the ribbon. I've tested the ribbon and it seems to be fine. Something ain't right and I'd appreciate any help. Cheers

I'm at the calibration stage and it looks like I've got problems. Current mode adjustment and pressure comparator adjustment went fine; Gate led lights and goes out as it should but I've hit a wall with the Voltage mode range adjustment.... VR2 adjusts R117 to -4.75V no prob, VR3 adjusts R28 to 0.6V no prob.. TP1 however reads nothing where ever I press on the ribbon. I've tested the ribbon and it seems to be fine. Something ain't right and I'd appreciate any help. Cheers

Nevermind, I have the Input (Sample/Ribbon) Switch labelled arse about face!
All done now:) calibrated and sliding about like John Curry on aceed
Pics when I finish the ribbon board!

I just about finished populating my board yesterday, what a project!!! Consumed most of the day. I'm missing one trimmer and one diode to get the PCB part completed. Can't wait to move on to the next phase. Cool stuff....

First off.. a huge thanks to Bill and Scott for an awesome piece of kit ! This thing rocks and as my final DIY project for the foreseeable future it really is the icing on the cake and everything seems to be good except for two (hopefully) minor problems. No,1, the slide voltage is not holding ie. with only the slide amount turned up, when I release pressure after a slide the voltage drops to 0V. I was suspicious the fault may be one of the LF398s but after swapping the relevant ones out the fault persists. Secondly, and this one shouldn't be too difficult to trace; the Course Offset pot currently has no effect.

I'm gonna crack on and get the course offset sussed if I can but any ideas about the Slide not holding would be most appreciated cos I honestly don't know where to look for faults

Ok so here's the "finished" article.
I got the course offset sorted no problem but I'm having trouble trcing the fault with the slide voltage not holding; again, any help or advice on this would be deserving of a pint or two of your favourite ale ! Many thanks would also be offered

Hey I finally got around to building this thing. What an amazing controller! Great design and wonderful documentation. I've only been playing with it for a few days and am completely in love with the performance. It's a perfect tool someone who is looking for linear control, or at least it is for me. I want to thank Scott and Bill for making this thing come to life and making it so damn easy to construct.
There's this interview with Bob Moog(soon before he died) somewhere on the net in which he was asked what recent technological achievements with musical instruments interested him. He responded that he enjoyed some of the new and innovative controllers that were being created. Although I cannot speak for the man(the legend), I would say that the Appendage lives up to this level. Albeit an old idea ,the ribbon controller has been recreated. The Appendage offers complete flexibility, expression, and ease of use. I have been wanting controller like this for years, thank you.

Ok so here's the "finished" article.
I got the course offset sorted no problem but I'm having trouble trcing the fault with the slide voltage not holding;

I don't mean to be pedantic, but everyone should remember that it's actually a coarse offset control, not a course offset control._________________What makes a space ours, is what we put there, and what we do there.

I am currently building a large synthesizer controller system which will include an appendage module. There will be a number of features integrated into the appendage design, such as a quantizer and several CV processing systems. Details can be found here:

So what has everybody been doing with their softpots as far as protection goes? Are you using them bare with no covering at all? Or are you using some sort of plastic sheeting or other protective layer over top? Maybe something like the plastic protectors used on touch displays like on phones and computer tablets?

I saw special tape in the Mc Master-Carr catalog for this purpose. I copied this from the catalog. "Super Wear-Resistant Slippery Tape
Often referred to as Rulon or bearing tape, this self-lubricating PTFE tape brings you more abrasion and wear resistance than regular PTFE tape. Use on bearing liners, chutes, and guide rails, and for applications requiring high temperatures and chemical resistance.

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